Milk-sterilizing jar-closure



H. J. WINTHERLICH.

MILK STERILIZING .l-AR CLOSURE.

APPLICATION FILED JULY30| 1920.

1,383,894. w 7 Patented July 5,1921.

% 44km MENTOR WITNESSK ATTORNEY HANS J. wrnrnnanrorr, or OMAHA, NEBRASKA, nssrenoa or ONE-HALF T0 7 RICHARD H. reason, or OMAHA, NEBRASKA,

MILK-STERILIZING JAR-CLOSURE.

Specification of Letters Patent.

Patented July'5, 1921.

Application filed July 30, 1920. Serial No. 399,977.

To all whom it may concern:

Be it known that I, HANS J. WINTHERLIOH, a citizen of the United States, residing at Omaha, in the county of Douglas and State of Nebraska, have invented new and useful Improvements in Milk-sterilizing J ar Ulosures, of which the following is a specification.

The object of my present invention is the provision of a hermetical jar closure calcu-.

the parts in the same positions as in Fig. 1.

Similar numerals of reference designate corresponding parts in all of the vlews of the drawings.

The jar 1 is provided in the inner wall of its mouth with a groove 2, and in the preferred embodiment of my invention the closure comprises a cover member 3, a disk 4 arranged below and spaced from the (FOYBI 3, and a socket member 5, the latter being open at its upper end and closed at its lower end. The cover 3 is provided with a pair of reversely inclined curvilinear cams 6 which are preefrably struck up from the cover as illustrated. The said cover is also provided with an upstanding marglnal flange 7, and a flange 8 that reaches outwardly from the upper edge of the flange 7 and is designed to rest on the edge around the jar mouth as shown. The disk 4 isof concavo-convex form in the cross section and is therefore possessed of expanding capacity. At its periphery the sald disk 4 s provided with a depending flange which is merged into an outwardly extending flange 10. Surrounding the inner portions of the cover 3 and disk 4 is a gasket 11, preferably of rubber. The said gasket is arranged in the mouth of the jar and is interposed between the flange 8 of the cover 3 and the flange 10 of the disk 4. Consequently when the cover 3 is crowded downwardly the gasprovided at its outer end with a head 12,

and at an intermediate point of its length with an exterior rib or flange 13. The disk L 4 snugly surounds the socket member 5 i above the rib 13, and also snugly surround mg and capable of being turned about the socket member 5 is a locking member 14 which is designed'to be moved onthe reversely arranged cams 8 with a view to placing the disk 4 under tension as shown in Fig. 2 and thereby compressing the gasket 11 for the purpose before described. It will also be noted that the locking member 14 is arranged below the head 12 of the socket member 5, and that said locking member 14 is provided with upstanding. finger portions 15.

It will be apparent from the foregoing that by turning the locking member 14 in. one direction the operator is enabled to. secure the closure in the jar mouth and at the same time hermetically seal the jar, while by turning the locking member 14 in the opposite direction the closure is rendered loose, and may then be readily removed from the jar. As before indicated my improvement is designed especially to lend itself to the sterilization of the jar contents in the home,

and in this connectionit will be understood that with milk in the jar, and the jar hermetically sealed as described it is simply necessary for the housewife to place the jar on a foraminous false bottom of a pail filled with water and to place the pail over a fire, after which a thermometer is displayed in the socket member 5. Then when the thermometer indicates a temperature of between 150 and 160 F., the pail is removed from the fire. The jar however, is left in the water in the pail for 25 minutes, after which the pail is arranged under a water spout, and cold water is permitted to run into the pail until the water is quitecold and the milk is of the same temperature as the water. Manifestly in this way the contents of the jar may be conveniently sterilized, and it will be appreciated that my improvement contributes materially to the convenience with which the sterilization process may be carried out.

Having described my invention, what I claim and desire to secure by Letters-Patent, is

l. A ar closure comprising a cover member having reversely arranged cam portions and also having a central aperture, a concave-convex disk disposed below the cover member and having a central aperture, an annular gasket interposed between the cover member and the disk and surrounding portions of the same, a tubular socket member closed at its lower end and open at its upper end and arranged in the apertures 01 the cover member and the disk and having a head at its upper end and an exterior flange at an intermediate point of its length, the head being disposed above the cover member and the flange below the disk, and a looking member revoluble about the socket member below the head thereof and above the cam portions of the cover member.

2. A jar closure comprising a central socket member closed at its lower end and open at its upper end, sealing members associated with and surrounding the socket member, and a locking member mounted on and capable of being turned about the socket member to adjust the sealing members.

3. A jar closure comprising a socket member closed at its lower end and open at its upper end and having abutments, a cover member surrounding the socket member, a disk surrounding the socket member and arranged above the lower abutment thereof, a locking member surrounding the socket member and interposed between the upper abutment thereof and the cover member, and packing surrounding portions of the cover member and the disk and interposed between said cover member and disk.

In testimony whereof I aflix my signature.

HANS J. WINTHERLICH. 

